Preparation method of scale inhibition dispersant for sewage treatment

A scale inhibitor dispersant and sewage treatment technology, applied in water treatment parameter control, water/sludge/sewage treatment, natural water treatment, etc., can solve the problems of low heavy metal ion elution rate, high corrosion rate, and low scale inhibition rate and other problems, to achieve the effect of high antioxidant efficiency, good heat resistance and wide pH range

Inactive Publication Date: 2018-02-16
南京悠谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a method for preparing a scale inhibitor and dispersant for sewage treatment, which solves the technical problems of the existing sca

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The first step: weigh according to the ratio of parts by mass: 100 parts of UP water, 10 parts of water glass, 18 parts of hydrogen peroxide, 4 parts of ammonium tungstate, 3 parts of thiourea, 1 part of ammonium cerium nitrate, 5 parts of coal gangue powder, 8 parts of sepiolite, 10 parts of rectorite, 15 parts of attapulgite, 10 parts of sodium benzoate, 12 parts of ethylenediamine, 5 parts of sodium molybdate, 3 parts of dibasic acid, 6 parts of chlorine dioxide.

[0028] The second step: put the coal gangue powder, sepiolite, attapulgite and rectorite in a 90°C constant temperature drying oven to dry for 50 minutes, then put them into the grinder and grind them for 40 minutes. Baking at 600°C for 20min.

[0029] Step 3: Put the roasted product, UP water, ammonium tungstate, water glass and ammonium cerium nitrate into a reaction kettle equipped with a thermometer, heating device, reflux condenser and stirrer, raise the temperature to 65°C, and start the stirrer to s...

Embodiment 2

[0033] The first step: Weighing according to the ratio of parts by mass: 100 parts of UP water, 20 parts of water glass, 22 parts of nitric acid, 8 parts of ammonium tungstate, 7 parts of thiourea, 5 parts of ammonium cerium nitrate, 25 parts of coal gangue powder, 12 parts of sepiolite, 20 parts of rectorite, 25 parts of attapulgite, 30 parts of sodium benzoate, 16 parts of ethylenediamine, 15 parts of sodium molybdate, 7 parts of dibasic acid, and 10 parts of chlorine dioxide.

[0034] The second step: put coal gangue powder, sepiolite, attapulgite and rectorite in a constant temperature drying oven at 100°C for 60 minutes, then put them into the grinder and grind them for 50 minutes. Baking at 700°C for 30min.

[0035] Step 3: Put the roasted product, UP water, ammonium tungstate, water glass and ammonium cerium nitrate into a reaction kettle equipped with a thermometer, heating device, reflux condenser and stirrer, raise the temperature to 65-85°C, and start stirring Stir...

Embodiment 3

[0039] Step 1: Weigh according to the ratio of parts by mass: 100 parts of UP water, 15 parts of water glass, 20 parts of perchloric acid, 6 parts of ammonium tungstate, 5 parts of thiourea, 3 parts of ammonium cerium nitrate, 15 parts of coal gangue powder 10 parts of sepiolite, 15 parts of rectorite, 20 parts of attapulgite, 20 parts of sodium benzoate, 14 parts of ethylenediamine, 10 parts of sodium molybdate, 5 parts of dibasic acid, and 8 parts of chlorine dioxide.

[0040] The second step: put coal gangue powder, sepiolite, attapulgite and rectorite in a 95°C constant temperature drying oven for 55 minutes, then put them into the grinder and grind them for 45 minutes. Baking at 650°C for 25min.

[0041] Step 3: put the roasted product, UP water, ammonium tungstate, water glass and ammonium cerium nitrate into a reaction kettle equipped with a thermometer, heating device, reflux condenser and stirrer, raise the temperature to 75°C, and start the stirrer to stir 90min, st...

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PUM

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Abstract

The invention relates to a preparation method of a scale inhibition dispersant for sewage treatment. The raw materials include: UP water, water glass, an oxidant, ammonium tungstate, thiourea, ammonium ceric nitrate, coal gangue powder, sepiolite, rectorite, attapulgite clay, sodium benzoate, ethylenediamine, ethylenediamine, binary acid and chlorine dioxide. The scale inhibition dispersant can reach a fluorine removal rate of 98-99.2% on fluorine-containing industrial wastewater, and a decolorization rate of 93-97%, has a chromium ion removal rate up to 99.5-99.9%, a calcium carbonate scale inhibition rate of 98-99%, a phosphorus elution rate up to 99.4-99.8%, and a wax inhibition rate of 82-87%, can effectively resist the erosion of 1300-1700mg/L chlorine ions to metals, and can reach acalcium carbonate scale inhibition rate up to 99-99.6%, a strontium sulfate scale inhibition rate up to 99.2-99.6%, a magnesium hydroxide and calcium sulfate scale inhibition rate up to 99.4-99.8%, and a carbon steel corrosion inhibition rate of 89-97%.

Description

technical field [0001] The invention relates to an environment-friendly material, in particular to a preparation method of a scale-inhibiting dispersant for sewage treatment. Background technique [0002] Anti-scaling dispersant is a copolymer with carboxyl, hydroxyl, sulfuric acid, phosphonic acid groups and other groups, because its straight chain and some branched chains contain phosphonic acid groups, so this copolymer has excellent anti-scaling performance, and It has a certain anti-corrosion effect. This product has good compatibility with commonly used water treatment agents and has a wide range of applications. [0003] Water treatment agents are necessary chemical agents in the process of industrial water, domestic water, and wastewater treatment. By using these chemicals, water can meet certain quality requirements. Its main function is to control the formation of scale and sludge, reduce foam, reduce corrosion of materials in contact with water, remove suspended...

Claims

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Application Information

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IPC IPC(8): C02F5/12C23F11/08
CPCC02F5/125C02F2101/105C02F2101/14C02F2101/20C02F2101/22C02F2103/023C02F2209/08C02F2209/10C02F2303/04C02F2303/08C23F11/08
Inventor 王维根
Owner 南京悠谷新材料科技有限公司
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